Graphic telescope

The graphic telescope is a type of camera lucida that has the power of a telescope. It was invented by Cornelius Varley in 1809.[1] It can be used to draw broad landscapes.

Some of Cornelius Varley's drawings of his invention

Graphic telescopes allow the size of the projected image to be adjusted.[2] They can be used separately, or with a portable table to reduce vibrations.[1][3] They may also be mounted in a vehicle.[4]

References

1. "Cornelius Varley". www.gracesguide.co.uk. Grace's Guide to British Industrial History.
2. "Camera Lucida & Varley Graphic Telescope - Victoria and Albert Museum". Victoria and Albert Museum. 28 December 2010. Archived from the original on 28 December 2010.
3. "Original ad for graphic telescope".
4. "Cornelius Varley's Patent Graphic Telescope". Cloudy Nights.

See also

• List of telescope types

External links

• Camera lucida and Varley Graphic telescope

• "Using the Patent Graphic Telescope" (video).
• "The graphic telescope and Varley's artwork". www.sites.hps.cam.ac.uk. Whipple Museum of the History of Science. (includes 1840 magazine article on instrument)
• A picture of a Graphic telescope, another.